<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>后台首页</title>
    <script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
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</head>
<body>
<center>

    <table border="0" cellpadding="0" cellspacing="0" width="688" height="800">
        <tr height="20"><td><img src="/images/default_t.jpg"></td></tr>
        <tr><td background="/images/default_m.jpg" valign="top">
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